1. Department of Chemical Engineering and Applied Chemistry, University of Toronto, 200 College Street, Toronto, Ontario M5S 3E5, Canada
2. Fluidigm Canada (now Standard BioTools Canada), 1380 Rodick Road, Markham, Ontario L3R 4G5, Canada
3. Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario M5S 3H6, Canada